The All-Russian Conference of Soviets was the first all-Russian meeting of representatives of the Soviets of Workers' and Soldiers' Deputies after the February Revolution of 1917. It took place on April 11 – April 16, 1917. The meeting was attended by 480 delegates from 139 Soviets, 13 rear military units, 7 active armies and 26 separate units of the front. The meeting was the first significant step in formalizing the Soviets spontaneously arising during the February Revolution into a single all-Russian system. It determined the principles for organizing local councils.